Krisztian Kasa created HIVE-21948:
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Summary: Implement parallell processing in Pre Upgrade Tool
Key: HIVE-21948
URL: https://issues.apache.org/jira/browse/HIVE-21948
Project: Hive
Issue Type: Improvement
Components: Transactions
Affects Versions: 3.1.0
Reporter: Krisztian Kasa
Assignee: Krisztian Kasa
Fix For: 4.0.0
Pre Upgrade Tool scans for all databases and tables in the warehouse
sequentially which can be very slow in case of lots of tables.
Example: It took the process 8-10 hours to complete on ~500k tables.
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